A simplified bash script for host status alert:

#!/bin/bash

email=h.t.emdad@gmail.com
NBR_DOWN=0
LOGFILE=/tmp/pinglog.txt

echo "Server Down Status" > $LOGFILE
for i in $(cat ping.txt); do
fping $i >/dev/null
if [ $? -ne 0 ]; then
echo "$i is down" >> $LOGFILE
NBR_DOWN=$((NBR_DOWN+1))
fi
done

if [ $NBR_DOWN -gt 0 ]; then
mailx -s "Server Down Alert" $email < $LOGFILE
fi

The contents on ping.txt is like (entries are with new line entry:

core-router
host1
bc
host2
host3
host4
cpanel

If you do not have ‘mailx’ installed, install it using

yum install mailx.